Results 211 to 220 of about 108,650 (265)
Some of the next articles are maybe not open access.
Anomalous small angle scattering
Quarterly Reviews of Biophysics, 1981Isomorphous replacement methods have been revolutionary in macromolecular structure research. This has been most clearly demonstrated in protein crystallography. Specific binding of heavy atoms to protein molecules in the crystalline state provides the necessary reference for the phase determination of each Bragg reflexion and opens the way to the ...
openaire +3 more sources
Limits of small angle scattering theory
Applied Optics, 1987On decrit les resultats d'une comparaison de la theorie avec les simulations de Monte Carlo. En utilisant des profils d'attenuation identiques et des fonctions de diffusion volumiques, la validite de la theorie des petits angles peut etre directement ...
J W, McLean, D R, Crawford, C L, Hindman
openaire +2 more sources
Nature, 1952
THE large lattice spacings occurring in such organic matter as fibres or crystalline viruses give rise to X-ray diffraction patterns with Bragg angles of minutes of arc rather than of degrees. The neighbourhood of the direct beam is, however, for a variety of reasons, easily obscured by scattered radiation and insufficient collimation, so that special ...
W, EHRENBERG, A, FRANKS
openaire +2 more sources
THE large lattice spacings occurring in such organic matter as fibres or crystalline viruses give rise to X-ray diffraction patterns with Bragg angles of minutes of arc rather than of degrees. The neighbourhood of the direct beam is, however, for a variety of reasons, easily obscured by scattered radiation and insufficient collimation, so that special ...
W, EHRENBERG, A, FRANKS
openaire +2 more sources
Elastic scattering at small angles of protons
Nuclear Physics A, 1978Abstract Differential cross sections and asymmetries are obtained from elastic scattering, between 0° and 7°, of 36.2 MeV polarized protons by C, Al, Fe and Ni natural targets.
BENDISCIOLI, GIORGIO +3 more
openaire +2 more sources
Protein Amyloidogenesis Investigated by Small Angle Scattering
Current Pharmaceutical Design, 2016In the last decades, the study of the mechanisms inducing amyloid fibril formation has involved several experimental and theoretical biophysical approaches. Many efforts have been made by scientist at the borderline between biology, chemistry, biochemistry and physics in order to understand why and in which way a protein starts its amyloidogenic ...
Ricci C. +3 more
openaire +2 more sources
Small-angle scattering from molten salts
Philosophical Magazine B, 1979Abstract The partial structure factors S++, S+- and 5−in molten salts are considered at small wavenumber k and the following results are established : (i) the term of order k2 in S++ - S– is determined by the difference in partial volumes of the two ionic species; (ii) a term of order k3 arises in the Sys from the presence of van der Waals dipole ...
ROVERE M +3 more
openaire +3 more sources
Small-angle neutron scattering in lysozyme solutions
Physical Review A, 1991Small-angle neutron scattering has been performed on lysozyme solutions at different concentrations, both at the Intense Spallation Impulsed Source (ISIS), Rutherford-Appleton Laboratory) and at Orph\'ee (Laboratoire Leon Brillouin). The results show that, in addition to the large-scale structural properties revealed by light-scattering experiments ...
GIORDANO, Rita +4 more
openaire +3 more sources
Small-Angle Scattering of Heterogeneous Catalysts
Journal of Applied Crystallography, 1997A heterogeneously catalyzed reaction involves the adsorption of the reactants on the surface of the catalyst. Consequently, catalytic activity is usually strongly related to the microstructural features of the catalyst. Small-angle scattering (SAS) has been extensively used to study heterogeneous catalysts and it has been shown to provide useful ...
openaire +2 more sources
Small-angle neutron scattering
2000Abstract Small-angle scattering (SAS) of X-rays or neutrons arises from scattering density fluctuations of the order 10—100 A. In biological studies, samples are usually solutions of macromolecules in this size range. Depending on the experimental conditions such as macromolecular concentration, for example, SAS provides information ...
openaire +1 more source
Small-angle scattering of polyelectrolyte solutions
Macromolecules, 1984Calcul de l'intensite de diffusion aux petits angles; point maximum g m de l'intensite de diffusion; comparaison avec les resultats ...
openaire +1 more source